August 2016 – Dial-A-Grue

Full handset functional

Pneumatic | 2016-08-04

So it turns out that the transformer wasn’t necessary. Â I broke out a pocket oscilloscope, and it boosted the voltage from 1.5V pp, to 7.5V pp, and the resulting volume in the earpiece was VERY LOUD, so I tried without the transformer, and it worked perfectly, and at a much more reasonable volume with the […]

Playing with a new theme

Pneumatic | 2016-08-01

This is a new, mobile friendly theme, but not everything translated properly. Â I beg your forbearance while I make it look reasonable again.

It speaks!

Pneumatic | 2016-08-01

Thanks to an impedance matching transformer from Radio Shack, I can now play audio though the handset. Yay! It still needs to be a little more polished, but the basic concept works. it_speaks.mov